How to charge a pure electric vehicle when the weather is particularly cold?

A big difference between pure electric vehicles and gasoline and diesel vehicles is that the driving force comes from batteries. In winter, gasoline cars must be warmed up for a period of time before they can run, and the batteries of battery cars must also be warmed up. Because the temperature is low in winter, even if you were fully charged last night, the battery is likely to quietly discharge some electricity the next day.

Therefore, charge the car for a period of time before going out. During the whole charging process, the battery will burn slowly. When fully charged, the battery can work normally. The temperature is low in winter. When the temperature of the lithium battery is lower than 0 degrees, the system software firstly heats the lithium battery, and when the temperature is higher than 5 degrees, the vehicle is charged. Many people think that battery cars charge slowly in winter. It shortens the time to heat the battery before charging.

Therefore, it is best for car buyers to choose the ready-to-use standard and charge the vehicle directly after use, because the battery temperature is higher at this time, which can improve the charging efficiency. Whether parking or charging, you need to choose a natural environment with relatively high temperature, such as underground garage and closed parking space. Even if there is no parking space, it is best to charge in broad daylight in winter, and it is stronger in sunny days.

You must plan your trip and make room for yourself. In winter, the cruising range of electric vehicles will generally decrease by 10%-20%, which is equivalent to 15km-30km. When the vehicle is running, the battery is in a state of rapid charging and discharging, and the battery will generate heat during the whole charging and discharging process, so the battery itself is always hot, and the working voltage of the battery is also very high, so the remaining power seen before getting off the bus is very considerable. However, after stopping for one night, the battery is already under pressure, and BMS will automatically adjust the service life of the battery downward, and then turn off the power supply.

In addition to battery maintenance, the rest of the battery car also needs more attention. Routine physical examination shall be conducted every two months, and technical professional maintenance personnel shall detect whether the vehicle parts are short-circuited and whether the electromagnetic coil is damaged, so as to avoid accidents. The charging speed of pure electric vehicles is relatively slow when the temperature is below zero.

Therefore, when charging the car in winter, try not to charge it outdoors, especially when the temperature is low at night. It should be placed in the underground parking garage of the room to charge the car. Let the temperature of fully charged natural environment be relatively warm; At the same time, we must choose the matching charging pile to charge the car, and choose the charging method of ultra-low temperature slow charging or communication slow charging to charge the car.

Because many pure electric vehicles use a relatively intelligent temperature control management system, that is, the vehicle has ultra-low temperature heating system software, so when the natural environment temperature for charging is low, especially below 5 degrees, the vehicle will automatically start the heating system software, so that all batteries can be temperature controlled, and then everything can be charged normally. So with this constant temperature system, even if pure electric vehicles are used in winter, car buyers don't have to worry.

Before the arrival of winter, the batteries of pure electric vehicles need to be maintained, and the cables and battery liquid in the middle of the battery pack also need to be maintained accordingly to improve the charging efficiency in winter application. Although the charging efficiency of pure electric vehicles will slow down in winter, this problem can be solved if we refer to some methods in this paper and take reasonable measures to prevent cold and keep warm, plus some characteristics of vehicles.